Steam boiler



` June 24, 1930. M. E. SMITHv 1,767,020;`

STEAM BOILER x. q Filed Jan. 27, 192'1" INVENTOR,

ATTORNEYS.

Patented June 24, 1930 UNITED STATES MARK E. SMITH, ERIE, PENNSYLVANIA, ASSIGNOR TO UNION IRON WORKS, OF

' ERIE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA STEAM 'norma Application filed January 27, '1927. Serial No.1163,914.V I

This invention is directed particularly to obtaining comparatively dry steam from a boiler where the steam is withdrawn from a drum in the circulating system of the boiler. A preferable embodiment of the invention is illustrated in the accompanying drawings as follows Fig. 1 shows a central section of a boiler with the invention in place.

F ig. 2 is a section on the line 2 2 in Fig. 1.

1 marks the front steam drum, 2 the rear steam drum, 3 the lower water drum, and 4 the front water drum. The front water drum is connected with the steam drum 1 by circulating tubes 5 and G. Thel drums 1 and 3 are connected by tubes 7 which are designed for an up-flow of water from the drum 3 to the drum 1. `The drums 2 and 3 are connected by tubes 8 which are designed for a down-How of water. The drums 1 and 2 are connected by water tubes 9, the liow being from the drinn 1 to the drum 2. The combustion chamber is illustrated at 10. A balile plate 11 is arranged between the tubes 5 and 6. A baille 12 extends upwardly from the drum 3 through the tubes 7 and 9 and a baille 13 extends from the drum 2 in front of the tubes 8 terminating above the baille 12.

Steam tubes 14 extend from the drum 1 to the drum 2. A separator plate 15 is -arranged in the drum 2 in the path of the steam from the tubes 14 and extends from the upper wall of the drum at the opposite side of the steam discharge pipe 16 from the steam tubes 14. A perforated plate 17 extends from the plate 15 to the drum above the tubes 14 but below the discharge pipe 16. This plate has suiiicient opening to make the flow of steam therethrough free. A baliie plate 18'extends from the drum below the tubes 14 and to a point below and off-set from the lower edge of the plate 15 forming a battle preventing the upsurging of water from the tubes 9 into the steam coming from the tubes 14. A few openings 19 are arranged in the upper part of the plate 15 to permit the ready escape of any steam that may be liberated in the drum 2. This permits of a free circulation of water and a free discharge of steam and at the same time a -very effective separation of any entrained -water from the steam.

l/Vhat I claim as new is Y l. In a steam boiler, the combination -of a front steam and water drum; a rear steam and water drum; a water circulating system comprising water tubes connecting said drums; steam tubes connecting said drums entering the drums in a radial direction; a

steam discharge opening leading from the upper wall of one of said drums; and a separating plate in the last-mentioned drum arranged ina plane parallel to the axis ofthe drum and leading from the upper wall of the drum at the side of the discharge opening opposite the incoming steam tubes, said Vplate extending downwardly into the path .ing platev in .the last-mentioned drum arranged in a plane parallel to the axis of the drum and leading from the upper wall of the drum at the side of the discharge opening opposite the incoming steam tubes, said plate extending downwardly into the path of the steam' discharged from the steam tubes and deflecting the separated steam upwardly to the discharge opening andthe separated water downwardly, said separating plate being free to discharge the separated water to the drum space from its lower edge; and a perforated plate connecting the separating plate with the drum between the steam tubes and the discharge opening.

3. In a steam boiler, the combination of a front steam and water drum a rear steam and water drum; a water circulating system comprising water tubes connecting said drums; steam tubes connecting said drums; a steam discharge opening leading from the upper wall of one of said drums; a separating plate in the last-mentioned drum leading from the upper wall of the drum at the side of the discharge opening opposite the incoming steam tubes, said plate extending downwardly into the path oit' the st eam discharged Yfrom the steam tubes and deflecting the separated steam upwardly to the discharge opening and the separated water downwardly, said separating plate being tree to discharge the separated water to the drum space from its lower edge; and a balile plate extending along the wall of the drum between the steam tubes and water tubes, said battle plate eX- tending past the lower edge of the separating plate but spaced from the separating plate.

4. In a steam boiler, the combination of a front steam and water drum; a rear steam and water drum; a water circulating system comprising water tubes connecting said drums; steam tubes connecting said drums entering the drums in a radial direction; a steam discharge opening from the upper wall of one of said drums; and a separating plate in the last-mentioned drum arranged in a plane parallel to the axis of the drum and extending from the upper wall of the drum at the side of the steam discharge opening opposite the inlet of the steam tubes and into the path of the steam discharged from the steam tubes, said separating plate deecting the separated steam upwardly to the discharge opening and the separated water downwardly, the separated water being free to discharge from the lower edge of the separating plate to the drum, the separating plate being provided with openings from the upper part of the drum space opposite the steam tube inlets to permit a direct discharge of steam accumulating in the drum at the opposite side of the separating plate from the steam tube inlets to pass directly to the discharge opening.

In testimony whereof I have hereunto set my hand.

MARK E. SMITH. 

